Dr. Mary Catherine Shields, MD
- Medicare services, 2024
- 1,777
- Medicare patients, 2024
- 711
- Part D claims, 2024
- 1,332
- MIPS score, 2024
- 85
- Hospital affiliations
- 3
- Practice address
- 800 Spruce Street, Philadelphia, PA 19107
- Practice phone
- Call (215) 829-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Shields' professional email, personal email and mobile number
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Dr. Mary Catherine Shields is an internist in Philadelphia, Pennsylvania
Dr. Shields practices at Pennsylvania Hospital in Philadelphia, Pennsylvania, part of University of Pennsylvania.
Dr. Shields' NPI, 1346688272, was assigned on June 13, 2013. Dr. Shields holds Pennsylvania license MD476493.
- NPI
- 1346688272NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799056776
- NPI enumeration date
- June 13, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (215) 829-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Catherine Shields practices at Pennsylvania Hospital in Philadelphia, Pennsylvania
Dr. Shields' primary practice is Pennsylvania Hospital, at 800 Spruce Street, Philadelphia, PA 19107 in Philadelphia County. The practice phone is (215) 829-3000.
- Pennsylvania Hospital800 Spruce Street, Philadelphia, PA 19107 · Philadelphia CountyPhone(215) 829-3000
Source: Dmand AI Affiliation Data
Dr. Mary Catherine Shields is affiliated with 5 sites of care and 2 medical groups
Dr. Shields' primary practice is Pennsylvania Hospital in Philadelphia, Pennsylvania, part of University of Pennsylvania. Dr. Shields is also affiliated with Hospital of the University of Pennsylvania. The medical group on file is Penn Medicine Lancaster General Health. Dmand AI also links Dr. Shields to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary Catherine Shields' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shields practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pennsylvania Hospital | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Catherine Shields is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Shields' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Shields is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Shields
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mary Catherine Shields billed Medicare for 1,777 services in 2024
CMS data shows 1,777 Medicare services from Dr. Shields across 20 procedure codes in 2024, for 711 Medicare patients. Medicare paid $73,393 for them.
Dr. Shields' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 9702024: 9892%
- Office and hospital visits
- 2023: 6742024: 60510%
- Other services
- 2023: 02024: 147
- Imaging
- 2023: 02024: 36
Where Dr. Shields' Medicare services took place, 2024
- In an office32919%
- In a facility1,44881%
Dr. Shields compared with the Pennsylvania median for internists, 2024
- Dr. Shields
- Pennsylvania median
- Medicare services
- 1,777vs 4174.3 times
- Medicare patients
- 711vs 1853.8 times
- Part D claims
- 1,150vs 2245.1 times
Medians across 5,518 internists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Shields' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Catherine Shields treated 711 Medicare patients in 2024, average age 73
CMS counts 711 Medicare patients who saw Dr. Shields in 2024. The largest group is 65 to 74, with 296 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.07, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Shields' median patient age at 60, with 57% women.
Dr. Shields' Medicare patients by age, 2024
Dr. Shields' Medicare patients by sex, 2024
- Women39155%
- Men32045%
Chronic conditions among Dr. Shields' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease48%
- Heart failure39%
- Mood disorders39%
- Chronic kidney disease38%
- Diabetes37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shields' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary Catherine Shields wrote 1,332 Medicare Part D claims in 2024
In 2024, Dr. Shields wrote 1,332 Medicare Part D claims for 232 patients. 86% of them were for generic drugs. CMS names the drug for 1,150 of them, across 26 drugs with 11 or more claims each, at $147,038 in total drug cost. In 2023, CMS named 710 claims across 19 drugs.
Dr. Shields' Part D claims by kind of drug, 2024
- Generic1,141 claims86%
- Brand-name191 claims14%
Dr. Shields' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7102024: 1,15062%
Drugs named by CMS: 26 in 2024, 19 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mary Catherine Shields scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Shields for performance year 2024, reported as part of a group. Dr. Shields accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Shields as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Shields' MIPS scores, performance year 2024
- 85of 100Final score
- 73.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mary Catherine Shields received $2,527 in industry payments from 2022 to 2025
CMS Open Payments shows 12 general payments to Dr. Shields from 10 drug and device companies from 2022 to 2025. Consulting fees make up the largest share, 81% of the total. Pfizer Inc. paid the most, $2,040.
General payments to Dr. Shields by program year, 2022 to 2025
General payments to Dr. Shields by kind, 2022 to 2025
- Consulting fees$2,04081%
- Food and beverage$48719%
Companies that paid Dr. Shields the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mary Catherine Shields's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mary Catherine Shields
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mary Catherine Shields' NPI number?
Dr. Mary Catherine Shields' NPI number is 1346688272. It was assigned on June 13, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Catherine Shields?
Dr. Mary Catherine Shields is an internist in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Catherine Shields practice?
Dr. Shields practices at 800 Spruce Street, Philadelphia, PA 19107. Dr. Shields' primary practice is Pennsylvania Hospital in Philadelphia, Pennsylvania, part of University of Pennsylvania. Dmand AI also links Dr. Shields to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Mary Catherine Shields' office phone number?
The practice phone on file for Dr. Shields is (215) 829-3000.
What is Dr. Mary Catherine Shields' medical license number?
Dr. Shields holds Pennsylvania license MD476493.
Which hospitals is Dr. Mary Catherine Shields affiliated with?
Dr. Shields practices at Pennsylvania Hospital in Philadelphia, Pennsylvania. Dr. Shields is also affiliated with Hospital of the University of Pennsylvania. Dmand AI links Dr. Shields to 1 more hospital.
What medical group is Dr. Mary Catherine Shields part of?
Dr. Shields is linked to Penn Medicine Lancaster General Health. Dmand AI links Dr. Shields to 1 more medical group.
Does Dr. Mary Catherine Shields accept Medicare?
Yes. CMS data shows Dr. Shields billed Medicare for 1,777 services in 2024, and Dr. Shields accepts Medicare assignment.
Does Dr. Mary Catherine Shields offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Shields as offering telehealth services.
What is Dr. Mary Catherine Shields' MIPS score?
Dr. Shields' MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Mary Catherine Shields see?
CMS counts 711 Medicare patients who saw Dr. Shields in 2024, with an average age of 73.
What services does Dr. Mary Catherine Shields bill to Medicare?
In 2024, Dr. Shields' most billed Medicare services were heart test or procedure (93010), heart test or procedure (93306) and hospital inpatient care (99232).
What drugs does Dr. Mary Catherine Shields prescribe most?
In 2024 Medicare Part D data, Dr. Shields' most prescribed drugs by claims were Amlodipine Besylate, Rosuvastatin Calcium and Atorvastatin Calcium.
Has Dr. Mary Catherine Shields received payments from drug or device companies?
CMS Open Payments shows $2,527 in general payments to Dr. Shields from 10 companies from 2022 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Mary Catherine Shields been practicing?
Dr. Shields graduated from medical school in 2007, 19 years ago.
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